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Four similar-sized magnets, P, Q, R and S were hung from strings of different lengths as shown in the diagram. A tray of iron pins was placed below the magnets. Each magnet attracted a different number of pins as shown in the diagram.

Which magnet was most likely the weakest?

A P
B Q
C R
D S

Two positions of a dice are shown. Find the number on the face opposite the face showing 4 dots.



A2
B3
C6
DCannot be determined

How many planets are present in solar system?

A5
B6
C7
D8

If the temperature increases, then what happens to the frequency of the sound produced by the organ pipe?

A Increases
B Decreases
C Unchanged
D Can’t say

An empty glass with a piece of cotton wool stuck into its bottom was lowered in an upside down position into a trough of water. In the experiment, the cotton wool did not get wet even when glass was fully submerged in water. The experiment demonstrates that


AAir has mass
BAir occupies space
CAir cannot be compressed
DBoth B and C.

A rectangular block of substance X has a length of 10 cm, breadth 5 cm and height 2 cm. The mass of the block is 0.027 kg. If density of water is 1 g/cm³ then, which of the following statements is correct?

AThe block will float in water as its density is 0.27 g/cm³.
BThe block will sink in water as its density is 2.7 g/cm³.
CThe block will sink in water as its density is 0.027 kg/cm³
DThe block will float in water as its density is 0.0027 g/cm³

Shuchi shone a ray of light onto sheet P as shown in the diagram. She found that a bright circle appeared only on sheet S. What can we deduce about the properties of sheets P, Q, R and S?


ASheet Q is made up of a translucent material.
BSheet R is made up of a translucent material.
CSheets R and S are made up of an opaque material.
DSheets P and S are made up of an opaque material.